Considering updating from Thunderbird 97.0b3(64 bit) to latest non-beta version

Hi! I am a tax accountant. Considering updating from Thunderbird 97.0b3(64 bit) to latest non-beta version. Is this feasible? Is there a separate/special update process … (read more)

Hi! I am a tax accountant. Considering updating from Thunderbird 97.0b3(64 bit) to latest non-beta version. Is this feasible? Is there a separate/special update process from Beta to the latest? Also would like to continue to use my POP account set-up at Optimum(Cablevision) here on Long Island. Email (Outbound)SMTP and (inbound)POP mail servers have to remain the same. So initially , I have to backup all my existing Thunderbird data & Profile.

I have used Thunderbird for a long time; previously used Eudora. The problem which I am trying to prevent is that when I try to send a client their encrypted PDF of their tax returns and related instructions, etc. my document database or data magt system, namely File Cabinet Solutions show in the activity log "Waiting for user input" --- so no email is created which would have all the requisite documents attached. The last time helpful client send feature worked in my tax software, Ultratax, was June 27, 2025. Ultratax could not figure a solution, after several weeks & suggested that I upgrade my Thunderbird.. Can anyone help?

Thank you! Best, Mike Porcari--- [edited phone# from public community support forum] (cell)

Asked by MJPGILGO 3 hours ago

The E-mail which I received on January 29, 2026

My name is Yoshinobu OKUMOTO. I live in Nara prefecture in Japan. I use Thunderbird as my e-mail software. My e-mail address is "ssh6820@asahi.email.ne.jp". I have recei… (read more)

My name is Yoshinobu OKUMOTO. I live in Nara prefecture in Japan. I use Thunderbird as my e-mail software. My e-mail address is "ssh6820@asahi.email.ne.jp". I have received a mail at January 29 18:35, 2026 . In the space for name of a sender of the mail, "ssh6820@asahi.email.ne.jp" is written. This is my e-mail address in Thunderbird.

I did not sent a mail at January 29 18:35, 2026 . I wonder who sent this mail to me. 
When this mail was sent to me, a red spam mail mark was attached to this mail.
Usually, when I received a spam mail, I transfer the spam mail to a spam mail folder.
But in this case, if I transfer this mail to a spam mail folder, I worries that transformation might transfer a mail from my acquaintance to the spam mail folder from that time on.
In the main body of the mail which I received at January 29 18:35, 2026, it was written as follows.

" Account is invalid.

When this page is displayed, the total of the account "asahi.email.ne.jp" is invalid.

The procedure to confirm the reason 1. Log-in with a browser, for example Chrome, to the account "asahi.email.ne.jp." 2.If the account is invalid, the explanation is displayed."

In the sentences mentioned above, " Account is invalid.  When this page is displayed, the total of the account "asahi.email.ne.jp" is invalid."
But I can use my Thunderbird as usual except this mail.

Next, I tried to log-in to the account "asahi.email.ne.jp" with a browser Chrome, I could not log-in.

I already received this mail which have the same text three times until now, 1/20 19:17, 1/21 17:21, 1/24 21:04. 

If it is necessary for me to forward to you the mail which I received at January 29 18:35, 2026, I send the mail if you inform me of your mail address.  

I will be thankful, if you give me some advices in this case. 

(Mr) Yoshinobu OKUMOTO

Asked by ssh6820 33 minutes ago

Firefox on Windows > History > Restore previous session : Doesn't open windows in original order anymore

I noticed that in the last few months (maybe longer) the windows which were open before Firefox was shut down no longer open up in the same order after Firefox is restart… (read more)

I noticed that in the last few months (maybe longer) the windows which were open before Firefox was shut down no longer open up in the same order after Firefox is restarted and 'History > Restore previous session' is selected (I want me to decide whether windows and tabs are re-opened after a Firefox restart, so I don't know if the same problem happens when the setting "Open previous windows and tabs" is selected).

This has been a problem a long(er) time ago, then it worked fine again, and now it happens again.

This might not seam like a big problem but I open new Firefox windows for each 'topic' I want to browse plus the first couple of windows are 'dedicated' to specific things.

But when the windows are 'out of the correct order' I can't just find things the (for me) usual place or windows opened for specific topics- and that is quite annoying. That is the background for this post.

I'm using Windows 11 version 25H2, and my Firefox is up to date (147.0.2)

I hope there are some Mozilla employees working with Firefox in this community (as they have the most 'inside knowledge', but I would of course very much also hear about experiences and ideas regarding this from other Firefox users :-)

Asked by impure-ivy-clammy 44 minutes ago

Firefox randomly closing

Lately my Firefox app window will just randomly close while I'm using it. I notice most often on Facebook, but that's because it's the most often used page. When I reop… (read more)

Lately my Firefox app window will just randomly close while I'm using it. I notice most often on Facebook, but that's because it's the most often used page.

When I reopen the app, it's like I just opened it, not like it got minimized.

What's wrong with it? I have it updated to current version, as well as I've run malware and virus scans to see if it's my phone. Nothing found.

Asked by Ryan L. 2 days ago

Last reply by Ryan L. 1 hour ago

Thunderbird password I've used for years doesn't work

The Thunderbird password I've used for YEARS (and is stored in "Saved Passwords") no longer works. I have two laptops with the same password, and they both ceased (on the… (read more)

The Thunderbird password I've used for YEARS (and is stored in "Saved Passwords") no longer works. I have two laptops with the same password, and they both ceased (on the same day) allowing downloads (or sending) of emails. This occurs on both my laptops -- one has TB version 115.10.1 w/ Windows 10, and the other has 140.5.0esr w/ Windows 11. It also occurs on my iPhone when trying to access the mail server.

Could the problem be the mail server itself?

Please Advise

Bob Hawkins

Asked by rehawkpe 1 month ago

Last reply by rehawkpe 2 hours ago

Local folders in Google Drive

I currently use imap with my email hosting provider and has worked well with Thunderbird. However, speeds are getting slower and storage costs have gone up. It is time fo… (read more)

I currently use imap with my email hosting provider and has worked well with Thunderbird. However, speeds are getting slower and storage costs have gone up. It is time for me to move non-current emails from my email account to back it up while still accessible. I was wondering if Thunderbird's Local Folders default path (C:\Users\......\AppData\Roaming\Thunderbird\Profiles\......\Mail\Local Folders) can be changed to a google drive folder on D:\ drive. If there are any risks in doing so. Thanks.

Asked by nospam17 3 hours ago

Why has the latest update done away with animated favicons? They worked on the previous version and I like them.

Why was it done? Is there a setting I can change so I can see them work as animated favicons? Will you change this on your next update? Otherwise, I am going to have to r… (read more)

Why was it done? Is there a setting I can change so I can see them work as animated favicons? Will you change this on your next update? Otherwise, I am going to have to roll-back the version.

Asked by information13 1 week ago

Last reply by information13 3 hours ago

Tools menu

I am trying to create filters for all the spam I have been receiving. It mentioned a tools menu for adding additional filters, but I am not seeing a tools menu anywhere, … (read more)

I am trying to create filters for all the spam I have been receiving. It mentioned a tools menu for adding additional filters, but I am not seeing a tools menu anywhere,

Asked by gerryeol 3 days ago

Last reply by gerryeol 3 hours ago

Bookmarks problems

My bookmarks in the bookmarks toolbar have disappeared, I can no longer save a bookmark anywhere. Some of my bookmark folders have disappeared. I have tried restoring but… (read more)

My bookmarks in the bookmarks toolbar have disappeared, I can no longer save a bookmark anywhere. Some of my bookmark folders have disappeared. I have tried restoring but I get the message "unable to process backup file"even after importing the file from my other laptop using both HTML files and .json files. I tried refreshing firefox, that didn't help. I uninstalled firefox and reinstalled it with the same results. Never had a problem with firefox before, but it's useless now! Can anyone help?

Asked by leslieshort406 3 hours ago

When Windows reboots, and Firefox is restarted, it opens a very tiny window

When Windows 11 reboots, and Firefox is restarted, it opens a very tiny window in the upper right part of the computer screen. Why is this? I believe I reported this befo… (read more)

When Windows 11 reboots, and Firefox is restarted, it opens a very tiny window in the upper right part of the computer screen. Why is this? I believe I reported this before but it still is not resolved.

Asked by Wayne Carpenter 3 days ago

Last reply by Wayne Carpenter 3 hours ago

I don't remember my password to login to server imap.videotron.ca How do I change the find the password or get a new one please?

I need help to log into Thunderbird. I get the same message over and over again (login to server imap.videotron.ca with username...............failed. I've tried severa… (read more)

I need help to log into Thunderbird. I get the same message over and over again (login to server imap.videotron.ca with username...............failed. I've tried several tried and true passwords from before and none fit.

Asked by alaindoucet 3 hours ago

Docusign Issue

I use Firefox as my default browser, and I like it very much. Problem: I received an outlook email with a link to a Docusign envelope. The link would not connect with … (read more)

I use Firefox as my default browser, and I like it very much.

Problem: I received an outlook email with a link to a Docusign envelope. The link would not connect with Docusign.

Work Around: When I used another browser, Microsoft Edge, the link opened up right away.

Additional Information: I use another digital signature program, Dotloop, and it works without any issues on Firefox.

Question: What can I do to make sure that Docusign works properly on Firefox?

Thank you!

Asked by Randy Hurley 3 hours ago

Still can't get into my account

I was doing puzzles on my sons account because i cancelled my previous account but decided to reactivate Facebook on Fire fox. My sons account was on Edge but I put my ne… (read more)

I was doing puzzles on my sons account because i cancelled my previous account but decided to reactivate Facebook on Fire fox. My sons account was on Edge but I put my new account on Fire Fox. I reactivated my new account on 6/29/24 got a new computer with Windows 11 and when I try to access it, it tells me to download it. What I need is to be able to activate it on my Windows 11 in order to use it. If you need any more information I will be glad to give it to you. It was downloaded from my old Windows 10 on to my Windows 11. Hope this make sense to you.

Asked by jmiacobellis 3 hours ago

Two Thunderbird Profiles suddenly result in immediate startup crashes

Hello! The other day everything worked as usual, and I shut down the computer for the night. The next morning, Thunderbird immediately crashed/shut down when starting ea… (read more)

Hello! The other day everything worked as usual, and I shut down the computer for the night. The next morning, Thunderbird immediately crashed/shut down when starting each of the 2 profiles I always use. The 3rd profile, which is the default-release running a different email, still seems to work normally. Thunderbird 115.10.1

I have tried Windows (10) safe mode, as well as thunderbird Troubleshoot mode and working offline, but the issue continued to occur.

I'm at a loss now as to what could cause 2 profiles to suddenly cause it to crash. By the way, one profile is for a gmail account and the other one is for an Outlook account, so they don't seem to be related.

In case it helps, there were 2 Microsoft Visual C++ programs installed or updated, and updates to Microsoft 365 and Google Drive just before the problem started. These were all auto updates in the background.

Any help from the Community would be greatly appreciated. Thank you!

Asked by John Shillito 3 hours ago

Passkey is BORKED on Firefox desktop

this feature absolutely DOES NOT WORK on ANY Firefox desktop browser on MULTIPLE machines I have tried - and actually I'm pretty sure I can say the same thing about the A… (read more)

this feature absolutely DOES NOT WORK on ANY Firefox desktop browser on MULTIPLE machines I have tried - and actually I'm pretty sure I can say the same thing about the ANDROID app too?

I can confirm EVERY SITE I have trouble signing in using Passkey on Firefox I can SUCCESSFULLY sign into on Chrome - every single time - the issue is clearly the BROWSER

worse still, it often COMPLETELY CRASHES Firefox and I have to forcibly KILL the process and restart Firefox, after even ATTEMPTING to use this feature

I have tried it on M1 Macbook Pros, on Ubuntu desktops (24.04 LTS) and also on Android

right now I am typing this in on a Firefox I literally just had to Force Quit and restart on a Mac - build 147.0.2 (aarch64)

Asked by mic8 3 hours ago

Bookmarks TOOLBAR HTML Back-Up

When backing up bookmarks to HTML - HTML Back-Up does not include the TOOLBAR Bookmarks. Please advise how to include the toolbar bookmarks in HTML format. Thank you. … (read more)

When backing up bookmarks to HTML - HTML Back-Up does not include the TOOLBAR Bookmarks. Please advise how to include the toolbar bookmarks in HTML format. Thank you.

Asked by Jemmma 4 hours ago